Ei

Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

n. The exponential intergral, a special function, defined as:

Etymologies

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Examples

In the most general case, an aggregate index can be represented as: where f () and g () are functions, λit are weights, the Ei are the N different energy vectors and Et is the aggregate energy index in period t.

Ei-ichi Negishi and Akira Suzuki of Japan, and American Richard Heck won the 2010 Nobel Prize in chemistry Wednesday for developing a carbon-bonding process that has enabled the creation of everything from anti-inflammatory drugs to super-thin computer screens.

Ei-ichi Negishi and Akira Suzuki of Japan, and American Richard Heck won the 2010 Nobel Prize in chemistry for developing a carbon-bonding process that has enabled the creation of everything from anti-inflammatory drugs to super-thin computer screens.

The Royal Swedish Academy of Sciences honored Richard Heck of the U.S. and Ei-ichi Negishi and Akira Suzuki of Japan for developing a sophisticated chemical tool known as palladium-catalyzed cross couplings.

Nobel Prize Winners: Past and Present Associated Press, AFP/Getty Images (2) From left: Akira Suzuki, Ei-ichi Negishi and American Richard Heck won the 2010 Nobel Prize in chemistry for developing a chemical method that has allowed scientists to make medicines and better electronics.

Reuters Ei-ichi Negishi of Purdue University speaks with the media on the phone after winning the 2010 Nobel Prize for chemistry, at his home in West Laffayette, Ind. The Nobel Prize for Chemistry was awarded to a trio of scientists who came up with an elegant way to mesh together stubborn carbon atoms, an approach vital for the development of novel medicines, materials and electronics.